Process of concentrating liquids.



G. fw. CHILDS. PROCESS OFONCENTEATING LIQUIDE.' t APPLIOLTION Hmm93m30.190s.

'Patented Oct-...12,1909

- a sums-anni- 1.

. WITNESSS! Carens,

und State. of Pennsylvmxin, have linvented through :L series of UNITEDASTATES" PATENT ormone Gil-:onen WnsnEY'cHILns, or RIDGWAY,PENNSYLVANIA.

Be it knovs'rh .that I, .GEORGE `WESLEY of Ridgway-in the county ofv Elkcertain nenT sind useful' Iniprovexnents'ili Brocesses -of .ConcentrntinLiq'uids, where'- Ofkthefollowin a. .speci cation,- reference .bexnghard ,to t ie. ,accompanying drawings.

1.el:'1te' tov f i'oce'sses ofV Wlute progressing 1t vessels, wherein x1pur- My niprovements veporxzmgliquid l ,tialvacu'um is rn'uintnined.

A as extracts-:of bark,

' In atpparatus of the class contemplated as hereto ore constructed,the-vessels are' permanentlyconnected w-ith euch other-,in an u 'n'-chengeabl to which tlien'enk liquid is alwnys introduced, end-'anotherves.. Lis constituted the terminal o ne, in which the' liquid is alwilysevaporated to greatest specic Agru-vit. and front which the liquidconcentrate-is lin Suclran arrangement niny be -sind sin'ilur vegetablematters, in s uchnn ,up umtus, the tubes in the liquld ceedin the4 firstone 'inthe series become inwith' deposits from Athe liquid, as

4the

-as 'such de the osits rapidly increase during conduct o the process,the efficiency o npcparqtus as a whole is 'notonly in aterinlly re ucedby the presence-A of 'such deposits, but the liquid concentrate'isdeprived `of the matter deposited.

ave ascertained 'that the losses incident' tothedeposit of n portion ofthe matter from the solution,

obfviated shifting in rotation from one to' b v :mother ofYthe vesselsin the series, the regione of introduction of the wcuk liquid undofdischare of the concentrado; with the effect tha-t t 'e deposits nm'defrom the lil-,uid

'of greater specific grnvity u rc. redissolvex by.

-j'niay .becozitinuously meintaine the 1i uid of l'ess'spectic gravityund ull of the so vid metter is dischnrged in solution in the'concentrate. Therefore; my improved' process is of three-fold advantage,Iirst, in.

rodnct-lon d; second,

that the n'axir'num volume of e sequencgso thats certnin vessel ofthe'serles 1s "constituted the nitnllone,

nlly' '-"l alsof-ind it convenient. to prom process of concentrntingother solutions, such u's above 'noted "muy be Pattea'oceiz, 1909.serial Nq. 157,094.

thatall of the concentrate 'ma be discharged in'liquid form and, third,that the cost of maintenance of the apparat-us is materially reducedfor, be4 eliminated from the ordinary apparatus hy renewing the tubes orother parts upon which they'lodge;

novel `features herein set. forth.

My liin u'oved explained-b re erencetot e accompanying drawings w lichshow a. multiple eifectconl-` prising four evaporating pans, soconstructed and arranged with respect to eweak liquid inlet conduit and'u concentrated liquid, discharge. conduitv that :my-"selected ,one of'said. puns -may e constituted the initial 12in ofthe 'seriesinconnection with thc Wcuk-liqnid conduit, and any selected one o f saidpuns maybe constituted the ternnnu "the cmccntrated liquid discharconduit.

` e said appxrntus with u. vapor-condenser 'pipcsin snchrelation theretothat the va ors muy he conducted to said condenser rom which every oneof the pans is,` for the time being, the 'terminal pan. Said alsocomprises other coli'ven'ent nv devices, butit is to b c L mdcrstoodthntI do not desire' prising any particular number of pans, or to theemployment of the particular ndjunctive devices described; as variousmodifications may be made inthe apparatus without. departing from theessential features o f myprocess.

In the drawings, Figure Lis n. plan view of said appnrntus, and Fig. Il,is u side eleva` t-ion thereo evaporating pans of the seriesconveniently pans are connected counterpart. vapor pipes valve 1:4,controllingcommunication' from the deposits a'foresaid can only Myinvention 'conlpi'ellends the various pan of the series in connectionwith In sei'cl'iguresrl, 2, 3,- nnd'4, Aare the.

grouped around thevnpnr condenser 6. Said.:

witheach other by C?, which extend from the upper vapor chnlfrslxn 8, ofone pan )recess ma. be inorefcleerly und vapor ecti'vely the pan l, topan 2. Communication between said pa'ns and the condenser by Way of thebranch 'pipes 12, is respectively con trolled by the valves 19, 20,21,22, the valve 19, controlling communication from pan l, to thecondenser.

The weak liquid which is lto be concentrated is Asupplied through theinlet 24, to

the conduit 25,'whicl1 is connected with the aus 1, to 4 inclusive, bythe respective ranches 27, 28, 29, and 30, the pipe 27, connecting vwithpan 1. Similarly said pans l to 4 inclusive are respectively connectedby branches 32,. 33, 34, and 35, with the colleentrated liquid dischargeconduit 37, which latter is provided with the outlet 38, leading to thepump 39. The introduction of the Weak liquid from the conduit 25, toeither of the pipes 27, 28, 29,.and 30, selectively, in accordancevvithwhieh pan is for the time being the initial one, is determined bythe valves 41, 42, 45, and 44. Likewise the final discharge ofconcentrated liquid through either of the pipes 32, to 35, selectively,1n accordance with which pan is for the 'time being the terminal one isldetermined by the valves 46, 47, 48, and 49, respectively.l Moreover,the pipes 32,233,347, and 35,t.hroughwhieh the liquidfis discharged fromthe individual. pans, are respectively providedwith branches 51, 52,-53, and 54, 'respectively extending to the inlet pipes.28, 29, 30,.:md27 ,'of the individual pans, and respectively controlled by valves 56,57, 58, and 59, to determine Whether the liquid shall be discharged tothe next adjoiningpan, Aor to the concentrated liquid conduit 37. Theweak liquid inlet pipes 27, 28, 29, and 30, of the respective pans 1, to4, inclusive, are conveniently pro- .vided with regulators 61, 62, 63,and-64, re- Spectively, by which the liquid in the 'respective pans maybe automatically maintamed ata predetermined level.

The heating drums 10, of the. pans 1, to 4, inclusive are respectivelyprovided with condensation drainpipes 66, 67, 68, and 69, and, each ofsaid condensation pipes is provided with four' pipe connectionsrespectively marked 71, 72, 78,' and 74,' and respectively controlled byvalves 8l, 82, 83, and S4. Saidpipes 66, 67, 68, and 69, are differentlycon- `nected, with the ipe 86, leading to the'boilers; the pipe 87,ending to the left hand end' oftheA water pump S8; the ipe 89, leadinoto the right hand end of sai pump 88, an the drip ipe 90, leading to thehot Well 91, shown 1n 91g. II. It may be here noted that the differentconnections of the similarly arranged sets of valves 81, to 84,inclusive, which sets are respectively local to the condensation pipes66, 67 68, and 69, are found convenient with'reference to' the lorder inwhich they are opened, .as hereinafter de-l and third pans of theseries, are respectively utilized to heat the tubes 11, in the drums 10,of what are for the time being the second` third and fourth pans in theseries, wherein they are condensed and discharged as Water throuo'h thepipes 67, 68, and 69. In order that the drum 10, of whichever pan is theinitial one may be heated, each of the vapor pipes 7, is provided with asteam inlet pipe 9.3. Said ipes 93, are respectively controlled by tievalves 94, 95, 96, and 97 the valve'94, controlling the inlet of steamto the ipe17, connecting the pan 1., with the pan 2. baid pipes 93, areconveniently brought together 1n common connection with a high ressuresteam inlet. 98, and loT pressure exlaust steam inlet 99, controlled bysuitable valves.` The va ors from what is for the time being the ourtllpan of the series are delivered through its respective branch pipe 12,to the condenser 6, which is 'provided with a drip outlet 100, extendingto the hot. well 91. Saidl 'condenser is also provided with the pipe102, leading -to a vacuum pump, so that the vaporization of the liquid1n the last pan of the series may be facilitated.

When the pan 1 is to be .xsed as the initial pan of the series, and ,thepan 4, as the terminal pan, the valves are set as fllowsz-The valve 41,controlling eomunuiication between the weak liquid supply conduit 25,and the inlet pi e 27, leading through the regulator 61, totiie. pan 1,is oleued; all of the other valves from Vsaid conduit 25, are closed;and, the valves 56, 57, and :'18, controlling the connections betweenthe adjoining pans are opened; so that the liquid flows successivelyfrom the pan 1, tl11'ougl1,pans 2, and 3, to pan 4, of course,increasing in specific ra-vity in its traverse. The concentrated iquidis discharged from pan 4, through the pipe 35, and, the valve 59, beingclosed and the valve 49 being opened, said concentrate is delivered tothe conduit 37. I

The respective steam inlet valves 94, 95, and 96, leading to the pans 2,3, and 4, are closed and the steam '.nlet valve 97 leading to the pan 1,opened. 'The vapor valves 14, 15, 16, are opened and the vapor valve 17,shutythe valves 19, 20, 2l, are-shut and the valve 22, opened. So thatthe liquid in the pan 1, is vaporized by {ih e'stemn surrounding thetubes 11, couiannng it, and the vapors from pan 1, are delivered withinthe drum 10,'of the pan 5?., to again heet and vaporizethe liquid. Thevapor from pan 2,

'is delivered to the pan 3, whereintheliquid .other in theseries, atsuchJintewals as to is again vaporized Athe vapor delivered insurethe'solution nd `dischnrgeof all of's to tie drum- 10, of thepan et. The'liquid the involastile contents of the weak liquid' beinagain vaporizedin' pane, the vapors inthe-concentrated 'uid product. areelivered'through the branch-pipe 12, Although I have escrxbed -a formo'f to the condenser .ywherein'they are conevnporatingan wherein theliuidtobecon clensed and iiow througlith'e Vipe 100, to' centrated isposedwithint 'es which are .7o the hot well. All of the-vagas 8l, uresurrounded 'by the heatin mcdiu.'m, tol wit, opened and the valves 82,83, and 84, are. thevaporsfroxn theprece gpuns or Steam shut, with theeect that the condensation. from an externelsource, it 1s to be-.underlpipes 66, 67, 68, and 69of the re ective stood thetthe method or meansfor heating pans l, 2, 3, and 4, are' res ective .con-h the liquid isimmaterial to my presentmf 7s nected with the 'bollerrth'e ot we theVBIIOIL right hand-side of the pump 58, and the left; Iclainin hundsidef saidpump. 1I The herein describedqprocesslof concen- When the pan5l, isto be used as the'initial trailing liquid, which COIQSISS MPI'OgTeSSmg pan of the'serics a'11d.tl1ep an3,' rs the termithe liquidthrough afseries of v essels; causso nalpan, the 'valves areset asfollows :.-The ing the liquid-to vaporize during 1ts pl: 4 f. .va1ve 44,controlling Acommuniclation-.E he, ression; utilizing the vapor of said.liquid 2o tween the weak liquid su plyconduit 25, jonrone vessel-toheat another, successively andA the inlet pipe 30, lea mg throughthein'saidseries; s .nd shifting-:from one to anls, in rotationthregions*85 regulator 64,' to the pan 4 -ls'o ened-a-ll otherof'said vesse of theother valves from scid condliiit'25, are of introduction of the mw-liqulclosed, und the'vnlies 59, 56,' and 57, conchar e ofthe concentrate,

trolling the connections between thev adj'oin- 2. lcll'he hereindescribed process of conceuf ing pans are opened j:sot'lizitthe'lquidflofws trating liquid, which" OODSSPSiP PIGeSSllgsuccessively --fromthe panV 4, through -.-tl 1e the liquid througha'seri'es of v i caus- 9 0' `pans l and 2, to the pali 3. The concen'ingthe liquid t o vuporize durln' its pro tmtcd. iqud-is discharged''from the pun' 3, son'g'utilizingthe vapor of sai liquid om through thepipe 34, and, the valve 58,. be; one vessel to hest another,'successively in ing closed and 'the .valve 48 bein'gopen 'said saidseries; sepsratel thewapor' concentrate is delivered to .the conduit37.' and'c'oxioentretmA an ror'n oneto'95 -The respective steam inlets97,` 94, and 95, another-of said .v ls, infrotation, thereleading to'the pans 1, 2, and 3, are. closed, gionsfof introduction of the ,ruwliquid and and the steam inlet-96,1eading'to-the pouf/L, ofdisclia-rge o-the concentrate.

. o'p'eried. -Thejvaporj valves.Y 17, 14 15, are 3. Theherein describedprocess of concen- 2 opened and thc'vnpor valve 1 6, s ut; the -tratinga. liquid in c series of evaporatin'g 100 valves 22,19, und20,areshuri-J end the valve pans,- through which the liquid is succes` 21,opened. -SQ tha-t' the liqld in the pun 4," sively progressed. whilevaporizin'g l w 4o 1s vaporincl, bythe Statur-surrounding the consistsin utiliz vt-hejvaporof said liquid tubes Il, containinvit, and, thevapors from frcnrone vesseli-glieatnnother, successively pam 4-,.aredelivered within the drum l0, of in said series; and successivelyconstituting 105 tho pnn 1, und-so ori-through the seriesg'the each anthe initial pan of the' series. vapors from' t-hc Fan 3, being delivered4'. 1e herein described process of concen- -through the -brnnc 1 pipel2, tc' the contrating a liquid in :t series of evaporatin'g denser 6.pans, through .which .he liquid .is succesi Tn .the last namedoperation, with-the an 'sivel)I progressed while vaporizing; which 110-.'f, as the initial member of the series,.n1 dofconsists in utilizinthe vapor of said liquid` 'the valves 84, are opened und the vn1ves`S1,'fronronev'essel toea't another, succsively S2, and 83, shut., to effectthe proper connec-v in said series; und,successive-1y constituting'tions of the respective condensa-tion .pipe' s.6 6, each an vtheterminal pan of the series. 6T, (is, and 69. Similarly when thepen 2, 5.J.[hehe'ren described processofconcenf 11u v is the initial pan, all ofthe valves 82, are 4truting liquid, which consists pro es sing' openedand the valves 8l, 83, and 84, are' the liquid' through' a. series ofv'esse causshut; and, when the pan 3, is 'the initil pan', ing the liuid to -vaporiie durin 'its pro es 4 all of the valves S3, are' 'opened:und 'the sion; liti zing the vapor of-sai liquid om I' valves Sl. R2,and S4 slim." l i one vessel to' heatanother, sukioessivel in- 12B-vg;

lf is to `bc.-umlclstorwl that eachof the .said .series andpreventingsaid liquid om pans of the seriesis thus in rota-tionconstiincrusting said vessels, by shifting from one 'tutcd the initialmemher !he1eo, and the' t o another of sa-id vesse ls ,lin rotation, the

:legions of introduction of-the welll-sli id' regions ofint-rodu'ctionof 'the raw'A liquid and of dsclmrgerae the concentrate Elms andofldischarge of the concentrate. 1 25 progressively shifted from onevessel to an- 6. The herein' described process of main- Atainirig, fijeefxjom incrustation :L series of signed my name, at lzhilndelphiu,Pennsylvania, this ninth dey of December, 1903.

GEORGE lV ESLICY C l-ULDS.

` evapo'ifntiifg Aprins, contituting :L multiple LifeeIt, byconstituting eaoh vessel in suoces- I sion the one from which theconcer'itinte'ls 5-dishargel and the one towhich the mwi ilVitnesses:

- liquid.- is=mtroduced. l brio. l". MUARTHUR,

ARTHUR in'. Pimm.

1.1i. testimony whereof, I have hereunto .It isi-hereby ceftied that-inLetters Patent No. 936,760, granted October 12,

1.9.09, liponj the lapplication of George Wesley Childs, of Ridgway.,Pennsyhania.,

4for an improvement in Processes of Concentruting Liquids, an errorappears in fin; Leners, avmf No,- 936,760.9I i

the `printed speceation requiring correction` as` follows: Page 4, line3, the word affect should. read eprect; and that the said Letters Patentshoqld be read with I v1-:his correeti-on therein that the same mayconform to the record of the case in the -Pa-teut Oflice. l

Signed and sealedthis 14th day of`-December,' A. D., 1909. 'I {SEAL} Y Ao. o. BILLINGS,

Acting 'ouzmnissz'oner of Patents.

Crrecionl Atainirig, fijee fxjom incrustation :L series of signed myname, at lzhilndelphiu, Pennsylvania, this ninth dey of December, 1903.

GEORGE lV ESLICY C l-ULDS.

` evapo'ifntiifg Aprins, contituting :L multiple LifeeIt, byconstituting eaoh vessel in suoces- I sion the one from which theconcer'itinte'ls 5-dishargel and the one towhich the mwi ilVitnesses:

- liquid.- is=mtroduced. l brio. l". MUARTHUR,

ARTHUR in'. Pimm.

1.1i. testimony whereof, I have hereunto .It isi-hereby ceftied that-inLetters Patent No. 936,760, granted October 12,

1.9.09, liponj the lapplication of George Wesley Childs, of Ridgway.,Pennsyhania.,

4for an improvement in Processes of Concentruting Liquids, an errorappears in fin; Leners, avmf No,- 936,760.9I i

the `printed speceation requiring correction` as` follows: Page 4, line3, the word affect should. read eprect; and that the said Letters Patentshoqld be read with I v1-:his correeti-on therein that the same mayconform to the record of the case in the -Pa-teut Oflice. l

Signed and sealedthis 14th day of`-December,' A. D., 1909. 'I {SEAL} Y Ao. o. BILLINGS,

Acting 'ouzmnissz'oner of Patents.

Crrecionl It is hereby certiiied that in Letters Patent No. 936,760,granted October 12,

i 1909, upon the application of George Wesley Childs, of Ridgway,Pennsylvania,

for an improvement in Processes of (jonwntrating Liquids, sm errorappears in tent No. 936,760.

i the printed specification requiring correction as follows: Page 4,line 3. the word I "ai`ect Ihould lead effect; and that ,the saidLetters Patent should he rend with i this correr-tion therein that thesame may conform tothe record ofthe case in the Patent Ofiiee.

Signed and sealed this 14th day of December, A. D., 1909.

[SEAL] y o. e. BILLINGS,

Correctiqn n Letters Ra

